/* Calculator Specific Styles */
:root {
    --calculator-primary: #FF9900;
    --calculator-secondary: #0056B3;
    --calculator-success: #28A745;
    --calculator-warning: #FFC107;
    --calculator-info: #17A2B8;
    --calculator-light: #F8F9FA;
    --calculator-dark: #343A40;
    --calculator-gray: #6C757D;
    --calculator-border: #E0E0E0;
    --calculator-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    --calculator-radius: 12px;
    --calculator-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Calculator Hero Section */
.calculator-hero {
    background: linear-gradient(135deg, #1A2B3C 0%, #2C3E50 100%);
    color: white;
    padding: 120px 0 60px;
    position: relative;
    overflow: hidden;
}

.calculator-hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background: url('../images/patterns/solar-pattern.png') center/cover no-repeat;
    opacity: 0.1;
}

.calculator-hero .hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.calculator-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: white;
    font-weight: 700;
}

.calculator-hero .subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 50px;
}

.hero-stats .stat {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--calculator-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--calculator-transition);
}

.hero-stats .stat:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.hero-stats .stat i {
    font-size: 2rem;
    color: var(--calculator-primary);
}

.hero-stats .stat span {
    font-size: 1rem;
}

.hero-stats .stat strong {
    display: block;
    font-size: 1.5rem;
    margin-bottom: 5px;
}

/* Calculator Wizard */
.calculator-wizard {
    padding: 60px 0;
    background-color: var(--calculator-light);
}

.wizard-progress {
    max-width: 900px;
    margin: 0 auto 60px;
}

.progress-bar {
    height: 6px;
    background-color: #E0E0E0;
    border-radius: 3px;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--calculator-primary), var(--calculator-secondary));
    border-radius: 3px;
    width: 0%;
    transition: width 0.5s ease;
}

.steps {
    display: flex;
    justify-content: space-between;
    position: relative;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
    cursor: pointer;
    transition: var(--calculator-transition);
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: white;
    border: 3px solid #E0E0E0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--calculator-gray);
    margin-bottom: 10px;
    transition: var(--calculator-transition);
}

.step-label {
    font-weight: 500;
    color: var(--calculator-gray);
    font-size: 0.9rem;
    text-align: center;
    transition: var(--calculator-transition);
}

.step.active .step-number {
    border-color: var(--calculator-primary);
    background-color: var(--calculator-primary);
    color: white;
    transform: scale(1.1);
}

.step.active .step-label {
    color: var(--calculator-primary);
    font-weight: 600;
}

.step.completed .step-number {
    border-color: var(--calculator-success);
    background-color: var(--calculator-success);
    color: white;
}

/* Wizard Steps */
.wizard-step {
    background: white;
    border-radius: var(--calculator-radius);
    padding: 40px;
    box-shadow: var(--calculator-shadow);
    margin-bottom: 30px;
    display: none;
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.wizard-step.active {
    display: block;
}

.wizard-step h2 {
    color: var(--calculator-dark);
    margin-bottom: 10px;
    font-size: 2rem;
}

.wizard-step > p {
    color: var(--calculator-gray);
    margin-bottom: 30px;
    font-size: 1.1rem;
}

/* Input Methods */
.input-methods {
    margin: 40px 0;
}

.method-selector {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.method-btn {
    flex: 1;
    min-width: 200px;
    padding: 20px;
    background: white;
    border: 2px solid var(--calculator-border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 15px;
    cursor: pointer;
    transition: var(--calculator-transition);
    font-size: 1rem;
    font-weight: 500;
}

.method-btn:hover {
    border-color: var(--calculator-primary);
    transform: translateY(-2px);
}

.method-btn.active {
    border-color: var(--calculator-primary);
    background-color: rgba(255, 153, 0, 0.1);
    color: var(--calculator-primary);
}

.method-btn i {
    font-size: 1.5rem;
}

.method-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.method-content.active {
    display: block;
}

/* Form Groups */
.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--calculator-dark);
    font-size: 1.1rem;
}

.input-with-slider {
    margin-bottom: 20px;
}

.input-with-slider input[type="number"] {
    width: 200px;
    padding: 15px;
    border: 2px solid var(--calculator-border);
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 20px;
    transition: var(--calculator-transition);
}

.input-with-slider input[type="number"]:focus {
    border-color: var(--calculator-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 153, 0, 0.2);
}

.slider-container {
    position: relative;
    padding: 20px 0 40px;
}

.slider-container input[type="range"] {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(to right, #E0E0E0, var(--calculator-primary));
    border-radius: 4px;
    outline: none;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--calculator-primary);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: var(--calculator-transition);
}

.slider-container input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider-ticks {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--calculator-gray);
}

.bill-examples {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.example-btn {
    padding: 10px 20px;
    background: var(--calculator-light);
    border: 1px solid var(--calculator-border);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--calculator-transition);
    font-size: 0.9rem;
}

.example-btn:hover {
    background: var(--calculator-primary);
    color: white;
    border-color: var(--calculator-primary);
}

/* Appliances Grid */
.appliances-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.appliance-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: var(--calculator-light);
    border-radius: 10px;
    border: 1px solid var(--calculator-border);
    transition: var(--calculator-transition);
}

.appliance-item:hover {
    border-color: var(--calculator-primary);
    transform: translateY(-3px);
}

.appliance-icon {
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--calculator-primary);
    border: 2px solid var(--calculator-border);
}

.appliance-details {
    flex: 1;
}

.appliance-details h4 {
    margin-bottom: 10px;
    font-size: 1.1rem;
    color: var(--calculator-dark);
}

.appliance-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.quantity-btn {
    width: 30px;
    height: 30px;
    border: 1px solid var(--calculator-border);
    background: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--calculator-transition);
}

.quantity-btn:hover {
    background: var(--calculator-primary);
    color: white;
    border-color: var(--calculator-primary);
}

.appliance-quantity {
    width: 50px;
    text-align: center;
    border: 1px solid var(--calculator-border);
    border-radius: 4px;
    padding: 5px;
}

.hours {
    margin-left: 15px;
    color: var(--calculator-gray);
    font-size: 0.9rem;
}

.hours input {
    width: 40px;
    text-align: center;
    border: 1px solid var(--calculator-border);
    border-radius: 4px;
    padding: 3px;
}

.appliance-wattage {
    font-weight: 500;
    color: var(--calculator-primary);
}

.total-consumption {
    background: var(--calculator-primary);
    color: white;
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    margin-top: 20px;
}

.total-consumption h4 {
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.total-consumption span {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Location Grid */
.location-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.location-section h3 {
    color: var(--calculator-dark);
    margin-bottom: 20px;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.location-section h3 i {
    color: var(--calculator-primary);
}

.state-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
}

.state-btn {
    padding: 12px;
    background: white;
    border: 2px solid var(--calculator-border);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--calculator-transition);
    font-weight: 500;
    text-align: center;
}

.state-btn:hover {
    border-color: var(--calculator-primary);
    transform: translateY(-2px);
}

.state-btn.active {
    background: var(--calculator-primary);
    color: white;
    border-color: var(--calculator-primary);
}

.city-select select {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--calculator-border);
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 20px;
    transition: var(--calculator-transition);
}

.city-select select:focus {
    border-color: var(--calculator-primary);
    outline: none;
}

.sunlight-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--calculator-light);
    border-radius: 8px;
}

.info-card i {
    font-size: 1.5rem;
    color: var(--calculator-primary);
}

.info-card h4 {
    font-size: 0.9rem;
    margin-bottom: 5px;
    color: var(--calculator-gray);
}

.info-card p {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--calculator-dark);
}

/* Connection Options */
.connection-options {
    display: grid;
    gap: 15px;
}

.connection-option input[type="radio"] {
    display: none;
}

.connection-option label {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    border: 2px solid var(--calculator-border);
    border-radius: 10px;
    cursor: pointer;
    transition: var(--calculator-transition);
}

.connection-option label:hover {
    border-color: var(--calculator-primary);
    transform: translateY(-3px);
}

.connection-option input[type="radio"]:checked + label {
    border-color: var(--calculator-primary);
    background: rgba(255, 153, 0, 0.05);
}

.connection-option label i {
    font-size: 2rem;
    color: var(--calculator-primary);
    margin-top: 5px;
}

.connection-option label h4 {
    margin-bottom: 5px;
    color: var(--calculator-dark);
}

.connection-option label p {
    font-size: 0.9rem;
    color: var(--calculator-gray);
    line-height: 1.5;
}

/* Roof Details */
.roof-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.roof-type-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
}

.roof-type input[type="radio"] {
    display: none;
}

.roof-type label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 10px;
    border: 2px solid var(--calculator-border);
    border-radius: 10px;
    cursor: pointer;
    transition: var(--calculator-transition);
    text-align: center;
}

.roof-type label:hover {
    border-color: var(--calculator-primary);
}

.roof-type input[type="radio"]:checked + label {
    border-color: var(--calculator-primary);
    background: rgba(255, 153, 0, 0.05);
}

.roof-type label i {
    font-size: 2rem;
    color: var(--calculator-primary);
}

.area-input {
    margin-bottom: 30px;
}

.area-unit {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 10px;
}

.area-unit input {
    flex: 1;
    padding: 15px;
    border: 2px solid var(--calculator-border);
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 600;
}

.area-unit select {
    padding: 15px;
    border: 2px solid var(--calculator-border);
    border-radius: 8px;
    background: white;
    min-width: 150px;
}

.area-help {
    font-size: 0.9rem;
    color: var(--calculator-gray);
    font-style: italic;
}

.area-visual {
    background: var(--calculator-light);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.roof-visualization {
    height: 150px;
    background: white;
    border: 2px dashed var(--calculator-border);
    border-radius: 8px;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
}

.area-info {
    display: flex;
    justify-content: space-around;
}

.area-info p {
    font-weight: 500;
    color: var(--calculator-dark);
}

.area-info span {
    color: var(--calculator-primary);
    font-weight: 600;
}

/* Shadow Options */
.shadow-options {
    display: grid;
    gap: 10px;
    margin-bottom: 30px;
}

.shadow-option input[type="radio"] {
    display: none;
}

.shadow-option label {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border: 2px solid var(--calculator-border);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--calculator-transition);
}

.shadow-option label:hover {
    border-color: var(--calculator-primary);
}

.shadow-option input[type="radio"]:checked + label {
    border-color: var(--calculator-primary);
    background: rgba(255, 153, 0, 0.05);
}

.shadow-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
}

.shadow-icon.low {
    background: linear-gradient(135deg, #28A745, #20C997);
}

.shadow-icon.medium {
    background: linear-gradient(135deg, #FFC107, #FD7E14);
}

.shadow-icon.high {
    background: linear-gradient(135deg, #DC3545, #E83E8C);
}

.shadow-option span {
    font-weight: 500;
    flex: 1;
}

.shadow-option small {
    color: var(--calculator-gray);
    font-size: 0.8rem;
}

.shadow-impact {
    background: var(--calculator-light);
    padding: 20px;
    border-radius: 10px;
}

.shadow-impact h4 {
    margin-bottom: 15px;
    color: var(--calculator-dark);
}

.efficiency-bar {
    height: 10px;
    background: #E0E0E0;
    border-radius: 5px;
    margin-bottom: 10px;
    overflow: hidden;
}

.efficiency-fill {
    height: 100%;
    background: linear-gradient(90deg, #DC3545, #FFC107, #28A745);
    border-radius: 5px;
    width: 85%;
}

#efficiencyValue {
    display: block;
    text-align: right;
    font-weight: 600;
    color: var(--calculator-dark);
}

/* Wizard Navigation */
.wizard-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--calculator-border);
}

.btn-prev, .btn-next, .btn-calculate {
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-calculate {
    background: linear-gradient(135deg, var(--calculator-primary), var(--calculator-secondary));
    color: white;
    border: none;
}

.btn-calculate:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 153, 0, 0.3);
}

/* Results Section */
.results-container {
    animation: fadeIn 0.5s ease;
}

.results-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.summary-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    box-shadow: var(--calculator-shadow);
    border: 1px solid var(--calculator-border);
    transition: var(--calculator-transition);
}

.summary-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.summary-card.primary {
    background: linear-gradient(135deg, var(--calculator-primary), #FFB347);
    color: white;
    border: none;
}

.summary-card h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.summary-card.primary h3 {
    color: white;
}

.summary-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.summary-card.primary .summary-value {
    color: white;
}

.summary-value small {
    display: block;
    font-size: 0.9rem;
    font-weight: normal;
    opacity: 0.8;
}

/* Results Details */
.results-details {
    background: white;
    border-radius: var(--calculator-radius);
    overflow: hidden;
    box-shadow: var(--calculator-shadow);
    margin: 40px 0;
}

.details-tabs {
    display: flex;
    background: var(--calculator-light);
    border-bottom: 1px solid var(--calculator-border);
    overflow-x: auto;
}

.details-tab {
    padding: 20px 30px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 1rem;
    font-weight: 500;
    color: var(--calculator-gray);
    cursor: pointer;
    transition: var(--calculator-transition);
    white-space: nowrap;
}

.details-tab:hover {
    color: var(--calculator-primary);
}

.details-tab.active {
    color: var(--calculator-primary);
    border-bottom-color: var(--calculator-primary);
    background: white;
}

.tab-content {
    padding: 30px;
    display: none;
}

.tab-content.active {
    display: block;
}

/* Cost Breakdown */
.cost-breakdown {
    max-width: 500px;
    margin: 0 auto 40px;
}

.cost-item {
    display: flex;
    justify-content: space-between;
    padding: 15px 0;
    border-bottom: 1px solid var(--calculator-border);
}

.cost-item.total,
.cost-item.final {
    border-top: 2px solid var(--calculator-border);
    border-bottom: none;
    font-size: 1.2rem;
    padding-top: 20px;
    margin-top: 10px;
}

.cost-item.subsidy {
    color: var(--calculator-success);
}

.cost-item.final {
    color: var(--calculator-primary);
    font-size: 1.3rem;
}

.chart-container {
    height: 300px;
    margin-top: 30px;
}

/* Savings Projection */
.savings-projection {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.projection-chart {
    height: 300px;
}

.projection-table {
    overflow-y: auto;
    max-height: 300px;
}

.projection-table table {
    width: 100%;
    border-collapse: collapse;
}

.projection-table th,
.projection-table td {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid var(--calculator-border);
}

.projection-table th {
    background: var(--calculator-light);
    font-weight: 600;
    position: sticky;
    top: 0;
}

.projection-table tr:hover {
    background: var(--calculator-light);
}

/* System Specifications */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.specs-item {
    background: var(--calculator-light);
    padding: 25px;
    border-radius: 10px;
    border-left: 4px solid var(--calculator-primary);
}

.specs-item h4 {
    color: var(--calculator-dark);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.specs-item ul {
    list-style: none;
    padding: 0;
}

.specs-item li {
    padding: 8px 0;
    border-bottom: 1px dashed var(--calculator-border);
    color: var(--calculator-gray);
}

.specs-item li:last-child {
    border-bottom: none;
}

/* Environmental Impact */
.environment-impact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.impact-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--calculator-border);
    transition: var(--calculator-transition);
}

.impact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.impact-card i {
    font-size: 2.5rem;
    color: var(--calculator-primary);
    margin-bottom: 15px;
}

.impact-card h4 {
    color: var(--calculator-dark);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.impact-card p {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--calculator-dark);
    margin-bottom: 5px;
}

.impact-card small {
    color: var(--calculator-gray);
    font-size: 0.9rem;
}

.environment-timeline {
    background: var(--calculator-light);
    padding: 25px;
    border-radius: 10px;
}

.environment-timeline h4 {
    color: var(--calculator-dark);
    margin-bottom: 15px;
}

.environment-timeline ul {
    list-style: none;
    padding: 0;
}

.environment-timeline li {
    padding: 10px 0;
    border-bottom: 1px solid var(--calculator-border);
    color: var(--calculator-gray);
}

.environment-timeline li:last-child {
    border-bottom: none;
}

.environment-timeline span {
    color: var(--calculator-primary);
    font-weight: 600;
}

/* Results CTA */
.results-cta {
    background: linear-gradient(135deg, #1A2B3C, #2C3E50);
    color: white;
    padding: 50px;
    border-radius: var(--calculator-radius);
    margin-top: 40px;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto 30px;
}

.cta-content h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: white;
}

.cta-content p {
    opacity: 0.9;
    font-size: 1.1rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-large {
    padding: 18px 35px;
    font-size: 1.1rem;
    font-weight: 500;
    min-width: 200px;
}

/* FAQ Section */
.calculator-faq {
    padding: 80px 0;
    background: var(--calculator-light);
}

.calculator-faq h2 {
    text-align: center;
    margin-bottom: 50px;
    color: var(--calculator-dark);
    font-size: 2.5rem;
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--calculator-shadow);
}

.faq-question {
    padding: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--calculator-transition);
}

.faq-question:hover {
    background: var(--calculator-light);
}

.faq-question h3 {
    font-size: 1.2rem;
    color: var(--calculator-dark);
    margin: 0;
}

.faq-question i {
    color: var(--calculator-primary);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 25px 25px;
    max-height: 500px;
}

.faq-answer p {
    color: var(--calculator-gray);
    line-height: 1.6;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .calculator-hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 15px;
    }
    
    .hero-stats .stat {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }
    
    .wizard-step {
        padding: 25px;
    }
    
    .location-grid,
    .roof-details-grid {
        grid-template-columns: 1fr;
    }
    
    .savings-projection {
        grid-template-columns: 1fr;
    }
    
    .results-summary {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-large {
        min-width: 100%;
    }
}

@media (max-width: 480px) {
    .calculator-hero {
        padding: 100px 0 40px;
    }
    
    .calculator-hero h1 {
        font-size: 2rem;
    }
    
    .step-label {
        font-size: 0.8rem;
    }
    
    .method-btn {
        min-width: 100%;
    }
    
    .results-summary {
        grid-template-columns: 1fr;
    }
    
    .details-tabs {
        flex-direction: column;
    }
    
    .details-tab {
        text-align: left;
        border-bottom: 1px solid var(--calculator-border);
        border-left: 3px solid transparent;
    }
    
    .details-tab.active {
        border-left-color: var(--calculator-primary);
        border-bottom-color: var(--calculator-border);
    }
}

/* Animation for value changes */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.value-updated {
    animation: pulse 0.5s ease;
}

/* Loading animation */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--calculator-border);
    border-top-color: var(--calculator-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Print styles */
@media print {
    .sticky-cta,
    .main-nav,
    .footer,
    .wizard-navigation,
    .cta-buttons {
        display: none !important;
    }
    
    .calculator-wizard {
        padding: 0;
    }
    
    .wizard-step {
        box-shadow: none;
        break-inside: avoid;
    }
    
    .results-cta {
        background: none;
        color: black;
        border: 2px solid #000;
    }
}